Introduction: Many processes are involved in shaping the microorganism and its structures where it performs the correct functions and with great efficiency. An organism gains its form from an undifferentiated mass of cells to gain the function and characteristics that are specific to it. These processes are cell determination, cell differentiation, pattern formation, and morphogenesis.
Answer to Problem 1TYU
Correct answer: Morphogenesis occurs through the multistep process of pattern formation.
Hence, the correct answer is option (c).
Explanation of Solution
Reason for the correct answer:
Over many steps, an intricate pattern is created by the tissues to form organs, shapes, and structures of the organism and this is called pattern formation. It is driven by chemical signals. The process of morphogenesis proceeds by the process of pattern formation. Morphogenesis refers to the process of organizing the structures of the cell and forming it into shapes and structures that helps in the function of the cells. Hence, the pattern formation leads directly to morphogenesis.
Option (c) is given as “pattern formation”
Pattern formation is the multistep process through which morphogenesis occurs.
Hence, the correct answer is option (c).
Reasons for incorrect answer:
Option (a) is given as “differentiation”.
Acquisition of specific characteristics by the cell is known as cell differentiation. Cell differentiation is the final step through which cells become specialized, whereas morphogenesis refers to the spatial organization of cells.
Hence, option (a) is incorrect.
Option (b) is given as “determination”.
Determination of the genetic expression of the cell in order to perform a specific function is known as cell determination. Cell determination does not play any role in the spatial organization of cells.
Hence, option (b) is incorrect.
Option (d) is given as “totipotency”.
The property by which a cell divides and produces all the differentiated cells is known as totipotency. The differentiated cells spatially organize themselves through pattern formation and not totipotency.
Hence, option (d) is incorrect.
Option (e) is given as “selection”.
Selection is the process through which the nature selects the fittest organism which can survive. Selection is not a process through which cells get organized into recognizable structures.
Hence, option (e) is incorrect.
Hence, options (a), (b), (d), and (e) are incorrect.
Pattern formation is the multistep process which leads to morphogenesis.
Want to see more full solutions like this?
Chapter 17 Solutions
Mindtap Biology, 1 Term (6 Months) Printed Access Card For Solomon/martin/martin/berg's Biology, 11th
- 3. (a) What are the four processes that drive embryonic development? (b) What two processes drive morphogenesis in a developing embryo?arrow_forwardZygote Embryo Muscle cells Intestinal cells Liver cells Blood cells Nerve cell Cardiac cells (1) Specialization occurs, resulting in the formation of a great variety of cell types. (2) Genes are inserted into the zygote to allow for the formation of different cell types. (3) The expression of genes responsible for the different cell types is controlled by the placenta. (4) The genetic information in the zygote is divided to produce a complete set for each cell typearrow_forwardQ5arrow_forward
- Virtually all steps of embryological development depend on: a. Alterations in the genome b. Tumor Stem Cells c. Changes in programs of gene expression d. Telomerasearrow_forwardOf the three polar bodies , one came from an unequal division of the ovum , but from where did the other two arise ? b ) A secondary division of the mature egg . c ) One is an undeveloped primary oocyte that failed to mature . d ) There were originally four polar bodies and one disappeared e)The division of the first polar body into two polar bodies .arrow_forwardIn vertebrate animals, spermatogenesis and oogenesis differ, in that 1.) Cytokinesis is unequal in oogenesis whereas it i equal in spermatogenesis 2.) spermatogenesis is not completed until after fertilization occurs, but oogenesis is completed by the time a girl is born 3.) Oogenesis produces four haploid cells, whereas spermatogenesis produces only one functional spermatozoon 4.) Oogensis ends at menopause. Whereas spermatogenesis is finished before birth 5.) Oogensis begins at the onset of sexual maturity whereas spermatogenesis happens in embryonic developmentarrow_forward
- Which of the following illustrates the regulative nature of early mouse development? (a) the mouse embryo is freeliving prior to implantation in the uterus (b) it is possible to produce a transgenic mouse (c) it is possible to produce a mouse in which a specific gene has been knocked out(d) genes related to Drosophila homeotic genes have been identified in mice (e) a chimeric mouse can be produced by fusing two mouse embryosarrow_forwardMatch each date in column B (approximate time after conception) with a developmental event or stage in column A.Column A Column B(1) blastocyst (a) 38 weeks(2) implantation occurs (b) 15 days(3) first few somites appear (c) 4–7 days(4) flat embryo becomes cylindrical (d) about 21 days(5) embryo/fetus boundary (e) about 21–24 days(6) birth (f) 2nd of week 8(7) primitive streak appears (g) days 6–13arrow_forwardIn human development, an embryo is most sensitive to chemicals, radiation, and pathogens during the first trimester because this is the time when a) tissues are differentiating b) organs are increasing in size c) the fetus grows rapidly d) fetal movements begin e) implantation occursarrow_forward
- In the cnidaria the ectoderm cells are important because they can react to a stimulus (light) from the environment by exhibiting a response from their muscle cell as a directed movement. To do this ectoderm cells .... A) Are the first specialized digestive cells B) Are neurocytes that have membrane receptors which react to light C) Are prokaryotic cells D) Form the first digestive organ E) Are the only cells with the Na+/k+ pumps explain why 0arrow_forwardWhat is true of the Progress Zone model? a) the length of time a cell resides in the progress zone dictates its identity along the proximodistal axis b) it is consistent with the outcome of removing the AER at successively later stages of limb development c) once a cell leaves the progress zone, its identity is established along the proximodistal axis d) cells of the progress zone are stimulated to divide by the AER e) all of the above You isolate a new mutant chicken strain in which limb outgrowth is severely curtailed. Limbdevelopment begins and the AER initially forms, but the AER then degenerates and subsequent development of the limb is aborted. Which of the following is a possible explanation for the AER phenotype? a) the mutant gene may function cell autonomously in the AER b) the mutant gene may function cell-nonautonomously in the limb bud mesenchyme c) the mutant gene may interfere with the feedback loop between the mesenchyme and AER d) all of the abovearrow_forwardIn Figure 13-2, the transplantation of certain regions ofembryonic tissue induces the development of structuresin new places. What are these special regions called, andwhat are the substances they are proposed to produce?arrow_forward
- Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSONBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxAnatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
- Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & CompanyLaboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education